GUI (tkinter) popularity and job prospects for

[Lammie Jonson]

 I have been a rails developer as well as JS/react. 
I had wanted to look at python a bit due to it's popularity.

I looked at tkinter which seems to have quite a few examples out there, but when I searched indeed.com for tkinter and wxpython it appeared that there was hardly any job listings mentioning those. Why is that ? It's a bit of a demotivating factor to get very serious with tk etc. I was going to look at something like tensorflow perhaps, though I am not sure if machine learning is that easy to pickup or not